Réponses

2014-05-14T22:11:54+02:00
Bonsoir,

Developper: 2x (3+2x)

2x (3+2x)=2x\times3+2x\times2x\\\\\boxed{2x (3+2x)=6x+4x^2}

Factoriser: 3,5x +3,5y

\boxed{3,5x +3,5y=3,5(x+y)}